Steam-boiler.



A. GATOHPOLE.

STEAM BOILER.

APPLICATION FILED 0012214912.

1,078,187, I Patented Nov. 11, 1913.

3 SHEETS-SHEET 1.

wumlloc COLUMBIA PLANOGRAPH c0., WASHINGTON, D. :4

A. OATGHPOLE.

STEAM BOILER.

APPLICATION FILED 00T.21, 1912.

1,078,187. Patented Nov. 11, 1913 3 SHEETSSHEE'I 2.

A. CATCHPOLE.

STEAM BOILER.

APPLIGATION FILED 00121, 1912.

Patented Nov. 11, 1913.

3 SHEETSSHEBT 3.

Amati) cA'rcHroLE, or GENEVA, NEW YORK.

STEAM-BOILER.

Specification of Letters Patent.

Patented Nov. 11, 1913.

Application filed October 21, 1912. Serial N0. 727,078.

To all whom it may concern:

Be it known that I, ALFRED GATCI-IPOLE, a citizen of the United States,residing at Geneva, in the county of Ontario and State of New York, haveinvented certain new and useful Improvements in steam Boilers, of whichthe following is a specification.

The object of this invention is to provide an improvement in steamboilers.

Another object of the invention is to increase the area of surface withwhich the products of combustion will come in contact as they pass fromthe fire box to the smoke stack. I

Another objectof the invention is to provide the boiler with flues thatare inclined in the direction of travel of the gases, both forward andback to the boiler.

Another object of my invention is to provide in the boiler a series ofwater tubes projecting outwardly from the rear end thereof, said watertubes being of an improved design.

Another object of my invention is to provide an improved arrangement ofdrafts or dampers by which a direct connection with the stack isprovided from the fire box in emergencies.

These and other features of my invention will. be fully illustrated inthe drawings, described in the specification and pointed out in theclaims at the end thereof.

In the accompanying drawings, Figure 1 represents a longitudinal sectionof my improved boiler, the section being taken on the line 1"--1 of Fig.2. Fig. 2 shows a vertical transverse section through the boiler on theline 2"2" in Fig. 1. Fig. 3 is a sectional view on a large scale of therear plate of the boiler and one of the water tubes in engagementtherewith. Fig. 4 is a vertical section on the line4*4" in Fig. 3. Fig.5 is a perspective view of the water tube showing the rear end thereof.Fig. 6-

is a rear elevation of the boiler mount.

In the accompanying drawings like reference numerals refer to likeparts.

In the drawingsreference numeral 1 indicates the boiler shell having theheads 2 and 3 in the opposite ends thereof. Be

tween these heads are the two sets of flues, the one set 4 at the bottomof the boiler and the other set 5 being shown at the top of the boiler,with a large open space between these tubes at the back of the boiler,which space tapers down toward the front of the boiler. This openspaceis made by inclining the lower set downwardly at the rear and incliningthe upper set upwardly at the rear, although it is obvious that all theboiler flues might be'made parallel to each other if so desired. I havefound however, that by inclining the flues upwardly slightly in thedirection of the travel of the gases, the gases travel somewhat morefreely and the draft through the boiler is increased and the dead waterbetween the fines in the boiler is decreased in volume. v

This boiler may be set in any ordinary housing with the fire boX 6 infront thereof,

series of water tubes 9, which tubes are shown on a large scale in Fig.3. These tubes are open at both ends and have a front end or neck ofreduced diameter, similar to a bottle neck. The boiler head 3 isprovided with suitable openings which are threaded for the purpose ofreceiving the reduced ends 10 of the water tubes, which reduced ends arealso threaded and are screwed into place. As shown in Fig. 2, thesewater tubes are arranged in a horizontal line across the boiler. Insmall sizes of boilers where small size water tubes 9 would'be used, thereduced end or neck may be dispensed with and straight tubes usedinstead. Each of these water tubes is provided with a partition plate ordiaphragm 11 to facilitate the circulation of water through the tube.The rear end of each of the water tubes 9 is closed by a screw plug 12,the plug and water tubebeing suitably threaded so that the parts will gotogether. The plug 12 is ,mediately back ofv the water tubes.

. supply pipe 14, through which the supply of water is introduced intothe boiler;

At the back of theboiler is provided a plate 15-which completelyincloses the boiler at the rear, this plate being supplemented by amasonry structure such as is shown" in Figs. land 2,or the equivalentthereof, In the middle of this frame-is placed the partition plate 16,which plate comesi1n- I The water'supply pipes 14 pass through thepartition plate" 16, which plateis suitably per-' forated to receivethem. The partition plate 16 is fastened to the'fraine 15 at each endthe machine bolts 17 17 This partition plate, together with the watertubes 9, form the partition between the upper and lower "parts of thesmoke box at the rear of the boiler- Above and below the partition plateare placed the doors 18 and 19'. which are hinged in the ordinarymanner'to the frame 15, and which can be opened to permit ac cess to theboiler flues. At each side of the horizontal row"- of water tubesare'provided the dampers 20 and21. -lVl1en these are open, as-showniii-Fig. 2, the gases and other products of combustion can'pass directlyfrom the lowerto the upper part of the'rear smoke box without goingthrough the-boiler flues, but when these dampers are closed the'gasesmust pass through the boiler fines to the" front' smoke box and backagain through the flues to the rear smoke box before getting intothestack. In order to prevent leakage through the intervals be tween thewater tubes, bars of any desired shape, such as are indicated at 22 inFig. 2, may be used. -These bars may be wedge shaped in, cross sectionor may be round, but in any" case should extend only from the middleline of the water tubes upwardly ashort distance without reaching to thetop of the water tubes. On top of the tubes if sodesired a sheet ofmetal'may be, laid for thepurpose of more elfeetually closing theopening, but the tubes with the intervening bars are believed tobesuflicient and would be "used in all boilers except that the plate laidon top ofthe water tubes might be used V in small boilers where smallwater tubes are -i1'-sed,- in which case the intervening bars may befomi-tted.

I Having thus describedmy invention, what I claim as newand patentableisas follows: 1. In a steamboiler, the combination-of aLshellhavingflheadson the opposite ends thereof andsmoke boxes at each endofthe boiler, {an upper and lowerset'o'f fines ex- "tendingjbetween saidheads of the boiler,

said "lower 'set of Hues being inclined 'upwardly toward the front ofthe boiler, said boiler having a large water space between the bottomand the front end of said llues, said upper set of fines being inclinedupwardly toward the rear of the boiler, a partition arranged across thehead of the boiler at the rear and-extending outwardly therefrom, saidpartition separating the lower part of the smoke box from the upper partof the smoke box, said partition being composed-of water tubes arrangedin asingle row, said tubes being connected to the head between the upperand lower sets of fiues and being placed practically in contact witheach other and forming practically a solid partition. i V

2. Ina steam boiler, the combination ofa shell having heads on theopposite ends thereof, a smoke box at each end of the boiler, apartition of water tubes extending horizontally across the smoke box atthe rear end of the boiler, and a damper at one end of said partition.8.. In a steam boiler having a headand a smoke box, adjacent thereto, aseries of water tubes extendingfromzsaid head into said smoke box andopening into the interior of the boiler, said tubes being arranged in asingle row and being placed adjacent to each other so as to form apractically close partition between the upper and lower part of thesmoke box.- 4. In a steam boiler, the'combination of a head, a series ofwater tubes connected to and extending through said head, each of saidtubes having a cylindrical body, a shoulder atone end thereofandareduced neck on said shoulder, said necks extending through the headand holding said tubes in a substantially solid partition.

5. A water tube for a boiler having a cylindrical body, a shoulder atone end thereof and a reduced neck on said shoulder, a partitionextending through said neck and part way into the body of thetube.

6. A water tube for a boiler having a cylindrical body, a shoulder atone end thereof and a reduced. neck on said shouldeig apartitionextending through said neck and part way into the body of thetube, a device for closing the rear end of'the water tube, a feed Waterpipe extending through said clcllsing device into the bottom of thewater tu e. v i a 7t-ln a-steam boiler the combination of a head, a rowof 'water tubes eachtube thereof extending throughl'said head andrearwardly therefrom said tubes forming. a substantiallyclosedpartition, a setof fines above said tubes and a setjof flues below saidtubes, saidfiues being connected to head, a smoke box adjacent thereto,a parframe work above and below said rail, doors tition extendingrearwardly from the head for closing said opening. 10

across said smoke box, flues extending In testimony whereof I aflix mysignature through the head and forwardly therefrom in presence of twowitnesses.

both above and below said partition, a frame ALFRED CATCHPOLE. work atthe rear of the smoke box having Witnesses:

a middle rail therein placed in contact with LENA M. ASH,

ends of said water tubes, openings in said ERIo ISCHINGER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patentl, Washington, D. G.

